[jira] [Created] (KAFKA-16019) Some of the tests in PlaintextConsumer can't seem to deterministically invokes and verify the consumer callback

["Philip Nee (Jira)" <ji...@apache.org>]

Philip Nee created KAFKA-16019:
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             Summary: Some of the tests in PlaintextConsumer can't seem to deterministically invokes and verify the consumer callback
                 Key: KAFKA-16019
                 URL: https://issues.apache.org/jira/browse/KAFKA-16019
             Project: Kafka
          Issue Type: Task
            Reporter: Philip Nee


I was running the PlaintextConsumer to test the async consumer; however, a few tests were failing with not being able to verify the listener is invoked correctly

For example `testPerPartitionLeadMetricsCleanUpWithSubscribe`

Around 50% of the time, the listener's callsToAssigned was never incremented correctly.  Event changing it to awaitUntilTrue it was still the same case
consumer.subscribe(List(topic, topic2).asJava, listener)
    val records = awaitNonEmptyRecords(consumer, tp)
    assertEquals(1, listener.callsToAssigned, "should be assigned once")



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